Heater



(No Model.)

D. L` LAMSON.

HEATER. No. 248,480. Peptnted Oct. 18,1881.

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N. PETERS. Phdol'nhogwr, Vlnhngion. D. C.

f NITED STATES.

PATENT OEEIcE.

DANIEL LOWELL LAMSON, OF FRYEBURG, MAINE.

HEATER.

SPECIFICATION forming part of Letters Patent No. 248,480, dated October 18, 1881.

Application filed May 4, 1881. (No model.)

To all whom it may concern:

Be it known that I, D. LOWELL LAMsoN, ot' Fryehurg, in the county of Oxford and State of Maine, have c,invented certain useful Improvements in Heaters, of which the following is a specification.

The object of this invention is to construct a heater for burning coal or wood, or both together, whereby advantage may be taken of the cost or convenience of the fuel-supply, and the re be better adapted to the condition of the weather.

Figure 1 is a sectional side elevation of the furnace inclosed in a suitable air-chamber on line y y, Fig. 2. Fig. 2 is a vertical sectional elevation on line a: x, Fig. 1.

Similar letters of reference indicate corresponding parts.

In the drawings, A represents the coal-burning hre-pot chamber, preferably in the form of the inverted segment of a cone, provided with grate A', having' shaking-bar a, and with ashpit A2, access to which is had through the front plate, B, ot' the furnace by the doors b 0 d, respectively.

With its front end resting in the front plate, B, and its rear supported in a shoe,j', on the top ofthe coal-burning chamber A, or in any other convenient and suit-able manner, is the horizontal wood-burning tirepot or cylindrical chamber O, which is preferably of oval or ellipsoidal cross-section, as shown, and designed to be of sufficient length to admit wood of suitable length. Said cylinder O is elevated far enough above the cylinderAto permiteffective radiation ot' heat from the bottom of the former and the top of the latter, a radiating-space, O, being formed between them.

The main smoke-fines D E are -arranged in the form ot a cross, centrally intersecting each other above the chamber or cylinder O, and from the top of the coal-burning chamber or cylinder A tlues g g extend upon either side of the chamber or cylinder C into the transverse flue D, while shorter lines L h, at either end of the chamber O, connect with the longitudinal flue E.

The whole device may be inclosed in a suitable brick chamber, F, as shown in Fig. 1, from whence it is designed to convey the hot air to the different rooms of the house.

In the cylinder or chamber C, by the more rapid consumption of wood and the large radiating-surface, a quick and intense heat may at any time be obtained, while the ignition and burning ot' coal being slower, a longer continued heat can be maintained in the cylinder or chamber A, while both together in their full capacity will supply as much heated air as two ordinary furnaces of similar dimensions set separately, and at a cost of construction but little exceeding that of a single heater. Thus the capacity and power of two furnaces is practically attained at about thev expense of one.

By the adjustmentof suitable luedampers u u, that are designed to be within easy reach of the operator, the combustion in either chamber or cylinder A C may be regulated Without interfering with the other, and the fines of one chamber or cylinder closed when `the other cylinder is in use separately.

In a furnace of this construction there is a great amount of radiating-surface within the inclosing air-chamber.

The smoke-fines D E are designed to be provided with dampers, as aforesaid, to direct the draft in whatever direction may be best for good combustion of the fuel, and the damper m inv the front Hue, h, should be ordinarily closed, but may he opened for a more direct course for the smoke whenever the wood-furnace door is opened, or when too much heat is being radiated and it is desirable to reduce the fire.

Having thus fully described myinvention, I claimas new and desire to secure by Letters Patent- 1. In a heater, the combination of the coalburning chamber A and wood-burning chamher C, connected by lines D E g h, substantially as herein shown and described.

2. In a heater consisting of a wood-burning chamberand acoal-burning chamberarranged one above the other, the radiating-space O between them to permit free radiation from the bottom ot' the one and the top ofthe other, as set forth.

DANIEL LOWELL LAMSON.

Witnesses:

SETE W. FlEE, FRANKLIN SHIRLEY. 

